...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental and Theoretical Physics >On the Einstein–Cartan Cosmology vs. Planck Data1
【24h】

On the Einstein–Cartan Cosmology vs. Planck Data1

机译：关于爱因斯坦-卡坦宇宙论与普朗克数据1

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The first comprehensive analyses of Planck data reveal that the cosmological model with dark energy and cold dark matter can satisfactorily explain the essential physical features of the expanding Universe. However, the inability to simultaneously fit the large and small scale TT power spectrum, the scalar power index smaller than unity, and the observations of the violation of the isotropy found by few statistical indicators of the CMB urge theorists to search for explanations. We show that the model of the Einstein–Cartan cosmology with clustered dark matter halos and their corresponding clustered angular momenta coupled to torsion can account for small-scale–large-scale discrepancy and larger peculiar velocities (bulk flows) for galaxy clusters. The nonvanishing total angular momentum (torsion) of the Universe enters as a negative effective density term in the Einstein–Cartan equations causing partial cancellation of the mass density. The integrated Sachs-Wolfe contribution of the Einstein–Cartan model is negative, and it can therefore provide partial cancellation of the large-scale power of the TT CMB spectrum. The observed violation of the isotropy appears as a natural ingredient of the Einstein–Cartan model caused by the spin densities of light Majorana neutrinos in the early stage of the evolution of the Universe and bound to the lepton CP violation and matter–antimatter asymmetry.
机译：普朗克数据的首次综合分析表明，具有暗能量和冷暗物质的宇宙学模型可以令人满意地解释不断扩展的宇宙的基本物理特征。但是，由于无法同时拟合大小规模的TT功率谱，标量功率指数小于1，以及CMB的少数统计指标发现的违反各向同性的现象，促使理论家寻求解释。我们表明，具有聚类暗物质光晕及其对应的聚类角矩和扭力的爱因斯坦-卡坦宇宙学模型可以解释星系团的小尺度-大尺度差异和较大的速度（体流量）。宇宙的不消失的总角动量（扭转）在爱因斯坦－卡坦方程中作为负有效密度项输入，从而导致质量密度的部分抵消。爱因斯坦-卡坦模型的萨克斯-沃尔夫积分贡献为负，因此可以部分抵消TT CMB频谱的大规模功率。观测到的各向同性违反是爱因斯坦–卡尔坦模型的自然成分，这是由宇宙演化初期的轻马约拉纳中微子的自旋密度引起的，并与轻子CP违背和物反角不对称有关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号